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Questions and Answers
Dimension features should be attached to the view where the feature’s shape is best shown
True
Dimensioning should always be duplicated to ensure clarity and accuracy
False
Dimensions should be given to rough surfaces rather than finished surfaces whenever possible
False
Dimensioning to hidden lines should be avoided wherever possible
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The longer dimensions should be placed outside all intermediate dimensions to avoid crossing extension lines
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True or false: Dimensions should be given between points or surfaces that have a functional relation to each other or that control the location of mating parts.
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True or false: Dimensions should be given so that it will be necessary for the machinist to calculate, scale, or assume any dimension.
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True or false: Dimensions should not be placed on a view unless clarity is promoted and long extension lines are avoided.
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True or false: Dimensions applying to two adjacent views should be placed between views, unless clarity is promoted by placing some of them outside.
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True or false: The longer dimensions should be placed outside all intermediate dimensions so that dimension lines will not cross extension lines.
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True or false: Each dimension should be given clearly so that it can be interpreted in only one way.
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True or false: Dimensions should be given to finished surfaces or important centerlines, in preference to rough surfaces, wherever possible.
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True or false: Dimensioning to hidden lines should be avoided wherever possible.
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True or false: Dimensions should be given between points or surfaces that have a functional relation to each other or that control the location of mating parts.
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True or false: Dimensions applying to two adjacent views should be placed between views, unless clarity is promoted by placing some of them outside.
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Study Notes
Dimensioning Principles
- Dimension features should be attached to the view where the feature's shape is best shown.
- Dimensions should be given to rough surfaces rather than finished surfaces whenever possible.
- Dimensions should be given between points or surfaces that have a functional relation to each other or that control the location of mating parts.
- Dimensions should not be duplicated to ensure clarity and accuracy.
- Dimensions should not be placed on a view unless clarity is promoted and long extension lines are avoided.
- Each dimension should be given clearly so that it can be interpreted in only one way.
Dimension Placement
- Longer dimensions should be placed outside all intermediate dimensions to avoid crossing extension lines.
- Dimensions applying to two adjacent views should be placed between views, unless clarity is promoted by placing some of them outside.
Dimensioning to Surfaces and Lines
- Dimensions should be given to surfaces or lines that are functional or control the location of mating parts.
- Dimensions should not be given to hidden lines wherever possible.
- Dimensions should be given to rough surfaces or important centerlines, in preference to finished surfaces, wherever possible.
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Description
Test your knowledge of geometric dimensioning and tolerancing rules with this quiz. Learn about the guidelines for specifying dimensions, and understand the importance of accurate and clear dimensioning in engineering and manufacturing.
